Review a change

Choose each changed file from the sidebar, read its unified or split diff, and mark it reviewed. A mark is tied to the file's content, so it becomes stale when the file changes.

Add comments to lines or files. Use review notes for feedback that applies to the whole change. Screenshots can carry numbered annotations that are flattened into the exported review packet.

Set the verdict to Accepted or Needs work, then export the packet for an agent. For a GitHub pull request, Promote to GitHub posts the new comments as a plain review comment. Fettle never approves, merges, or edits source files.